Frogatto is a new free source (but not art) 2d platform game released for GNU/Linux, Windows, MacOS and even iPhone !

Frogatto is now a fully playable, fun, classic adventure platformer with over thirty levels, version 1.0 representing the first stable version of the game.
Frogatto also contains a fully functional editor that allows you to create your own fun levels or edit existing levels. The engine is heavily moddable, and as an Open Source game we welcome new talented contributors.

Frogatto is a “platformer” or “jump-and-run” videogame. Like many older arcade/nintendo/sega titles, the world is viewed as a cross-section seen from the side, and your character walks and jumps between solid platforms, whilst avoiding being hurt by monsters. We’re not a clone of any specific game; although just by being a platformer, it’s impossible not to have something in common with games like mario or sonic. So we are trying to innovate a bit.